71 lines
2.6 KiB
C++
71 lines
2.6 KiB
C++
// SPDX-License-Identifier: BSD-2-Clause
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// This code is part of the sfizz library and is licensed under a BSD 2-clause
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// license. You should have receive a LICENSE.md file along with the code.
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// If not, contact the sfizz maintainers at https://github.com/sfztools/sfizz
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#include "Config.h"
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#include "ADSREnvelope.h"
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#include <benchmark/benchmark.h>
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#include <algorithm>
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#include <random>
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#include <numeric>
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constexpr int fixedAmount{12};
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constexpr float sampleRate{100.0f};
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constexpr int envelopeSize{2 << 16};
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constexpr float attack = static_cast<float>(static_cast<int>(envelopeSize / 4) - fixedAmount) / sampleRate;
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constexpr float decay = attack;
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constexpr float release = attack;
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constexpr float releaseTime = envelopeSize - static_cast<int>(envelopeSize / 4);
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class EnvelopeFixture : public benchmark::Fixture
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{
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public:
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void SetUp(const ::benchmark::State &state)
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{
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region.amplitudeEG.attack = attack;
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region.amplitudeEG.release = release;
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region.amplitudeEG.decay = decay;
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output.resize(state.range(0));
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}
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void TearDown(const ::benchmark::State& /* state */)
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{
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}
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sfz::MidiState midiState;
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sfz::Region region{0, midiState};
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sfz::ADSREnvelope<float> envelope;
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std::vector<float> output;
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};
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BENCHMARK_DEFINE_F(EnvelopeFixture, Scalar)(benchmark::State& state)
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{
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for (auto _ : state) {
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envelope.reset(region.amplitudeEG, region, midiState, 0, 0, sampleRate);
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envelope.startRelease(releaseTime);
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for (int offset = 0; offset < envelopeSize; offset += static_cast<int>(state.range(0)))
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for (auto& out: output)
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out = envelope.getNextValue();
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benchmark::DoNotOptimize(output);
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}
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state.counters["Blocks"] = benchmark::Counter(envelopeSize / static_cast<double>(state.range(0)), benchmark::Counter::kIsIterationInvariantRate);
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}
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BENCHMARK_DEFINE_F(EnvelopeFixture, Block)(benchmark::State& state)
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{
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for (auto _ : state) {
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envelope.reset(region.amplitudeEG, region, midiState, 0, 0, sampleRate);
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envelope.startRelease(releaseTime);
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for (int offset = 0; offset < envelopeSize; offset += static_cast<int>(state.range(0)))
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envelope.getBlock(absl::MakeSpan(output));
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benchmark::DoNotOptimize(output);
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}
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state.counters["Blocks"] = benchmark::Counter(envelopeSize / static_cast<double>(state.range(0)), benchmark::Counter::kIsIterationInvariantRate);
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}
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BENCHMARK_REGISTER_F(EnvelopeFixture, Scalar)->RangeMultiplier(2)->Range((2 << 6), (2 << 11));
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BENCHMARK_REGISTER_F(EnvelopeFixture, Block)->RangeMultiplier(2)->Range((2 << 6), (2 << 11));
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BENCHMARK_MAIN();
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